Run Claude Code on Sonnet and bring Opus only to difficult conversations Claude Code has a consultant tool: your main model does the routine work and consults with a more powerful one at key moments. Claude decides when, usually before he commits to a program, when an error repeats itself, or before he calls a task to execute. The installation, from the entropy docs: .
1. Launch with Claude -- Sonnet model -- Opus 2 consultant. Or type /opus consultant in the middle of the session. This is saved as your default, and /advisor off turns it off.
3. To explore files in a cheaper model, set a subagent named explore with the model: Haiku, or set cloud_code_SUBAGENT_model=haiku for subagents without their own model The advisor is experimental and needs the Anthropic API, so it won't run on Bedrock or Google Cloud. Each consultation session is billed according to the consultants' rates, and in subscriptions it is considered against your usage limits.